Characterization of less common nitrides as potential permeation barriers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F19%3A00500425" target="_blank" >RIV/61389021:_____/19:00500425 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/19:00500425 RIV/68407700:21220/19:00327553 RIV/68407700:21340/19:00327553

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0920379618308214?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920379618308214?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.fusengdes.2018.12.056" target="_blank" >10.1016/j.fusengdes.2018.12.056</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of less common nitrides as potential permeation barriers

Popis výsledku v původním jazyce

In a fusion reactor, the transport of hydrogen isotopes (primarily tritium) has to be controlled, from the point of view of fuel balance and retention in the reactor components, which can result in material degradation and spreading of radioactivity. To suppress this, tritium permeation barriers are developed. Suitable materials for the permeation barriers are those with low hydrogen isotope permeability - primarily ceramic materials, such as oxides, carbides and nitrides. In this study, coatings of six less common nitrides prepared by physical vapor deposition – namely AlCrN, CrN, Cr2N, CrWN, WN and ZrN – were investigated. Besides basic characterization (elemental and phase composition, surface morphology and coating thickness), hydrogen permeation, adhesion, residual stress and thermal expansion were evaluated. All coatings were dense, crack-free and well adherent. The permeation reduction factor which was determined at 400 °C and 1 bar ranged from ˜102 to ˜5 × 103, the best performance being achieved by the ZrN coating. As these materials seem not to be investigated as hydrogen permeation barriers, they have a very high potential to be further improved

Název v anglickém jazyce

Characterization of less common nitrides as potential permeation barriers

Popis výsledku anglicky

In a fusion reactor, the transport of hydrogen isotopes (primarily tritium) has to be controlled, from the point of view of fuel balance and retention in the reactor components, which can result in material degradation and spreading of radioactivity. To suppress this, tritium permeation barriers are developed. Suitable materials for the permeation barriers are those with low hydrogen isotope permeability - primarily ceramic materials, such as oxides, carbides and nitrides. In this study, coatings of six less common nitrides prepared by physical vapor deposition – namely AlCrN, CrN, Cr2N, CrWN, WN and ZrN – were investigated. Besides basic characterization (elemental and phase composition, surface morphology and coating thickness), hydrogen permeation, adhesion, residual stress and thermal expansion were evaluated. All coatings were dense, crack-free and well adherent. The permeation reduction factor which was determined at 400 °C and 1 bar ranged from ˜102 to ˜5 × 103, the best performance being achieved by the ZrN coating. As these materials seem not to be investigated as hydrogen permeation barriers, they have a very high potential to be further improved

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA14-12837S" target="_blank" >GA14-12837S: Interakce izotopů vodíku s fúzními materiály</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Fusion Engineering and Design

ISSN

09203796

e-ISSN

—

Svazek periodika

139

Číslo periodika v rámci svazku

February 2019

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

74-80

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85059446361